[stackskipton]

Officially no, but there is undocumented API (if you are commercial, they provide documentation and support) that is public without authentication.

[redanddead]

the more I think about it, the more it's actually so weird that the leagues don't have APIs

[Shalomboy]

The request definitely comes from the leagues' broadcast partners, right? They would want as many eyeballs concentrated in as few places as possible so they can sell ads for more.